With the apparatus Fig. 98 hold your finger over the lower end of the tube, suck as much air as you can out of the tube, pinch the coupling, and remove your finger under water. Does the atmosphere drive water up the tube very rapidly and with great force?

Experiment 75. A Fountain

With the apparatus Fig. 99 suck as much air as you can out of the bottle, pinch the coupling, and open it under water. Does the atmosphere lift the water into the bottle and produce a beautiful fountain?

Fig. 99. A Fountain

Experiment 76. Magic Tumbler

Fill a tumbler with water, cover it with a sheet of paper, hold the paper on with your hand, invert the Ambler, and remove your hand (Fig. 100). Does the atmospheric pressure upward support the paper and water?

Magic

Fig. 101. Hore Magic